implement exports, fixes #141

test/codegen/language/duplicate_import_liba.dart

Index: test/codegen/language/duplicate_import_liba.dart
diff --git a/tool/input_sdk/lib/core/type.dart b/test/codegen/language/duplicate_import_liba.dart
similarity index 71%
copy from tool/input_sdk/lib/core/type.dart
copy to test/codegen/language/duplicate_import_liba.dart
index d2e107b6b183f9f674dfba4e7138c195a2d69c19..b8af1a7da6842538fc68e1582dd8a51a45acfce2 100644
--- a/tool/input_sdk/lib/core/type.dart
+++ b/test/codegen/language/duplicate_import_liba.dart
@@ -2,9 +2,12 @@
 // for details. All rights reserved. Use of this source code is governed by a
 // BSD-style license that can be found in the LICENSE file.
 
-part of dart.core;
+library liba;
 
-/**
- * Runtime representation of a type.
- */
-abstract class Type {}
+var field;
+
+void method() {}
+
+class Class {}
+
+void methodOrClass() {}